Lock



Nov. 10, 1925- E N JACOBI ocx Filed Oct 1920 "ATTORNEY Patented Nov. 10.1 925;

EDWARD N. .JACOBI, F MILWAUKEE; WISCONSIN. ASSIGNOB BY MESNE ASSIGN-mass, no names e'srn'n'r'ron conrona'rron, or MILWAUKEE, wrsconsm, A.

CORPORATION OF Application fled oetob'er a, 1920. Serial 1%. 415.741.

To all whom it may 50mm! Be it known that I. Em'vARn-N. J Acorn, a

citizen of the United St'ates, and resident of Milwaukee, MilwaukeeCounty,- Wisconsin, have invented newand useful Ini provements in Locks,ofwhich the/following is a description, reference being had to the,facc'ompanyi g drawings, which are a part of this specification.

' This invention relates to locks of the type used for locking toolboxes of automobiles wherein Y a knob-controlled latch may be locked bya removable key to prevent unauthorized access to the tool box.Theinvention, however, is capable of various uses and is not to-belimited to any particular, purpose. An object of the invention is tosimplify the construction and make it mex ensive to 29 manufacturethough durable an and with a wide range of key changes. p 7

With the above and other objects-in view the invention consists in thelock-as herein claimed and all equivalents.

Referrin to the accompanying drawings .in which like characters ofreference indicate the same parts in difierent views: v, Fig. 1 is afront view of a lock constructed in accordance with this invention Fig.2 is an edge view thereof; Fig. 3 is a front view with parts sectioned;Fig. 4 is a central sectional view; v Fig. 5 is-a rear view of the coverplat: removed 'and inverted;, Fig. 6 is a view of the knob or thimble;

Fig. 7 is aperspective viewof the lock sleeve; and, Y Fig. 8 isasectional view of the rel with the key in' place. In these drawingslO-indicates a lock case of sheet metal bent to shape as usual and 11 isthe cover plate therefor having the usual ga oi? the look case. The lockcase. and cover plate are held togetheriby rivet posts is upset at bothends. A sliding lock bolt '114'fite in an opening in one end of the lookcase and is guided by a slotted w1 ng. 15'r1ding on a pin 16, Another 1srecessed to form a spring seat 17 for a coil spring 18 which is confinedwithin it at one end and on the end of the lock'case at the y insertedin the longitudinal lock barg 23 80 that the lock barrel is incapable ofgetting lugs 12 fitting in notches in the.

other. end where the lock case is provided with an indentation 19forming. a rejection on the interior thereof for holliing the springcentered.- The upper portion 20 of thespring seat 17 is oi sufficientwidth to bear against the bottom of the lock case and the cover plate tosteady the lock bolt.

. A sheet-metal cylindrical knob 21 with an nward] turned flange atoneend and an outwar 1y turned flange at. the other ,end"

fits within an opening of the cover plate. The outwardly'turned-flangeof the knob 21 is'confinedbetwecn the coverplate and the attachingflange 22 of a cylindrical lock sleeve 23. The cylindrical lock sleeveprojects within the knob 21 while the attachmg flange 22 is'connected byrivets 24 to the cover plate. The-flange of theknob' 21 is not entirely.enclosed byflthe attaching} flange 22. and at its exposed portion it isprovided with a projecting finger 25. which engages a recess 26 in thelock bolt to cause the withddrawal of the lock bolt against the pressureof its. spring when the knob is turned.

A lock cylinder 27 fits within the lock sleeve'23 with its shoulder 27'against an inturned flange aihthe end of the sleeve and its outer endrejects through the end of the knob 21 whi 0 its inner end bears againstthe flat surface of the. lock bolt 14. A number of tumbler slides 28 fitwithin the lock barrel transversely thereof and are aligned flush withthe surface of the lock barrel by i the serrated edg'es ofa ke'ly 29when it is wayi.30.'. When the key is withdrawn, however, these tumblerslides 28 are projected extending key into opposite'openings 31 ofthe'lock sleeve being turned. The key not only withdraws the tumblerslides but'it serves as a handle by means of which the lock barrel maybe in-the' pathof the lock bolt 14-80 as tolpre vent its withdrawal, butin the otheri position, as shown by dotted lines in sand figure, it isremoved from the. path of the turned and so cause an eccentrically posi-1o: lock bolt and the" latter is free to be withaction of the drawneither by the cam action of its beveled projscting end on engaging thestrike plate, or tumbler slides 28 may project within the slots 31 ofthe lock sleeve in either of these two positions, it is obvious that thekey may be withdrawn either when the bolt is locked or when it isunlocked.

Registering openings 33 in the lock case and cover plate are to receiveattaching screws or rivets, not shown, for securing the lock in place. i

In operation the lock bolt may act as a latch to yield against thepressure oi its spring when the lock barrel is in positlon to place thepin 32, as shown by dotted lines in Fi 3. This yielding movement of thelock it ma J be occasioned bythe cam veled end thereof on closing thedoor to which the lock'is attached or it may be caused by the turnin ofthe knob 21 so that the finger 25 thereof ears against the shoulder ornotch 26. When, however, the lock barrel is locked in its other positionwith the pin 32in the position shown in Figs. 3 and 4, the lock boltcannot be withdrawn by either means. Thetnmbler slides by projecting inthe openings 31 serve to lock the lock barrel in either of 'these twopositions and. re'uire the presence of the key in order to withdraw themto a position in which the lock barrel may be moved. The key also servesas a handle for moving the lock barrel'when it is unlocked.

The lock construction is composed of few parts inexpensive tomanufacture and easy I to assemble and is not likely to wear or get outof order. It 1' uires no friction means for holding the loc barrel inposition to receive the ke for the lock barrel is locked in thatposition whenever-the key is removed. The lock mechanlism beingcontained within'the knob relieves the lock caseofismall parts andpermits of the use ofa coil spring and heavy bolt construction.

What I claim as new and desire to secure I by Letters Patent is:

1. In a look, a lock mounted knob for moving the lock bolt, and akey-controlled lock barrel within-the knob having a projection on itsend eccentric the turning of the knob. As thebolt, a

, from the lock barrel-- bolt, a rotatabily -thereto forv blocking themovements of the lock bolt.

2. In a look, a lock bolt, a rotatable knob for moving the lock bolt, astationary lock sleeve within the knob, a key-controlled lock barrelrotatably mounted within the lock sleeve and engageable therewith, andan eccentric projection on the lock barrel for blocking the lock bolt ina locking position of the lock barrel.

3. In a lock, a lock case, a knob rotatably mounted therein, a lockbarrel contained within the knob and adapted to receive a key, tumblerswithin the lock barrel positioned by the key, barrel and knob engaged bythe tumblers when the key is removed, a lock bolt in the lock 'ca'seengaged and moved by the knob, and a projection on the lock barrelstanding in the path of the lock bolt in a position of the lock barrelin which the key may be. removed.

4.-In a lock, a lock case, a cover plate fited thereto, a sliding lockbolt within the lock case, a knob cover plate and provided with a fingerengaging the lock bolt for moving it, a lock sleeve within the'knobsecured to the cover plate and provided with openings, a lock barrelrotatably mounted in the lock sleeve and the knob, key controlledtumbler slides in the lock barrel adapted to engage the openings ofthelock sleeve, and a projection on the lock barrel adapted to block thelock bolt in a locking position of the lock barrel.

5. In a lock, a lock case, a cover plate therefor, a knob rotatablymounted in the cover plate, cover plate and having a cylindrical portionwithin the knob provided with openings, a lock barrel rotatably mountedin the lock sleeve and the knob, key-controlled tumbler a lock sleevebetween the rotatably mounted in thea lock sleeve riveted to the,

slides in the lock barrel adapted to engage the openings of the sleeve,a springressed loo 7 finger on the knob engaging the lock bolt formoving it, and a pin projecting and standing in the path of the lockbolt in a locking position of the lock barrel. o v

In testimony whereof, I aflix my si nature.

. EDWARD N. J A OBI.

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